nodrivervsundetected-chromedriver

python stealth browser-automation selenium

AGPL-3.0 14 2 4,003

321.9 thousand (month) Jan 15 2024 0.48.1(2025-11-09 05:57:23 ago)

12,519 5 1143 GPL-3.0

Sep 04 2020 1.1 million (month) 3.5.5(2024-02-17 17:18:36 ago)

nodriver is a Python library for browser automation that communicates directly with the browser via the Chrome DevTools Protocol (CDP), without relying on Selenium or chromedriver. It is the successor to undetected-chromedriver, created by the same author, and is designed from the ground up to be undetectable by anti-bot systems.

Key advantages over traditional browser automation:

No chromedriver dependency Communicates directly with Chrome/Chromium via CDP websocket, eliminating the most common detection vector (chromedriver fingerprint).
Undetectable by default Does not set the navigator.webdriver flag, does not inject automation-related JavaScript, and avoids CDP detection patterns that anti-bot systems look for.
Fast and lightweight Without the Selenium/WebDriver protocol overhead, nodriver is significantly faster at launching browsers and executing commands.
Async-first Built entirely on Python's asyncio, enabling efficient concurrent browser automation.
Simple API Clean, Pythonic API that is easier to use than raw CDP or Selenium.

nodriver is particularly useful for scraping websites protected by advanced anti-bot systems like Cloudflare, DataDome, or PerimeterX, where standard Selenium or Playwright setups get detected and blocked.

Undetected chromedriver is custom open source headless browser driver based on Selenium. It extends Selenium headless browsers to be more ressistant to fingeprinting and identification techniquest like: - Cloudflare - Datadome - Imperva And other similar WAF anti-bot systems.

Highlights

anti-detectcdpasyncfast

stealthseleniumheadless-browser

Example Use

```python import nodriver as uc import asyncio async def main(): # Launch browser - undetected by default browser = await uc.start() # Open a new tab and navigate tab = await browser.get("https://example.com") # Wait for an element and interact with it search_box = await tab.find("input[name='q']") await search_box.send_keys("web scraping") # Click a button button = await tab.find("button[type='submit']") await button.click() # Wait for navigation and extract content await tab.wait_for("div.results") results = await tab.query_selector_all("div.result") for result in results: title = await result.query_selector("h3") print(await title.get_text()) # Take a screenshot await tab.save_screenshot("results.png") browser.stop() asyncio.run(main()) ```

```python # It works the same as Selenium just with a different import. import undetected_chromedriver as uc driver = uc.Chrome(headless=True, use_subprocess=False) driver.get('https://nowsecure.nl') driver.save_screenshot('screenshot.png') driver.close() ```